What this MCCB is and what it does
The Siemens SENTRON 3VA1110-6MH36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, built around a TM120M thermal-magnetic overcurrent release. The TM120M designation means the thermal element is fixed at 100 A (the Iu rating), while the magnetic short-circuit pickup is adjustable between 700 A and 1600 A — that's 7x to 16x the rated current, giving you room to coordinate with downstream devices without nuisance tripping on motor inrush. Breaking capacity is the headline number here: 220 kA at 240 V AC, 154 kA at 415 V, and 121 kA at 440 V. At 500 V and 690 V it still holds 7.5 kA. That 220 kA figure at 240 V means this breaker can safely interrupt a fault current up to 220,000 amps without welding contacts or venting gas into the panel — critical for high-capacity transformer secondaries or busway feeds where available fault current is high. Rated insulation voltage is 800 V, so the internal clearances and creepage are designed for 690 V systems with margin. The front face carries IP40 protection — fine for a closed panel, but not for washdown environments.
Thermal derating — what the temperature table tells you
The 100 A rating holds at 45 °C and 50 °C ambient. Above that, the thermal element must be derated: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. If your panel internal ambient runs hot — say 60 °C near the top of a sealed enclosure — this breaker still carries 96 A continuous, but you lose 4 A of headroom. The operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C.
Panel fit and mounting
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep. The 76.2 mm width is a standard 3-pole MCCB footprint — it occupies three 25.4 mm (1-inch) module positions on a DIN rail or panel-mount base. Depth of 70 mm means it clears most shallow backpanels, but verify gland-plate clearance if the breaker is mounted near the enclosure rear wall. Maximum power loss is 25 W, so factor that into your enclosure thermal calculation if you're grouping several breakers.
What it does not include
No communication function, no phase failure detection, no ground-fault monitoring. The neutral conductor is not upgradeable or retrofittable. These are deliberate omissions — this is a plain thermal-magnetic MCCB for straightforward feeder or motor branch protection, not a smart breaker with metering or remote trip.